File:The street railway review (1891) (14757900334).jpg

Identifier: streetrailwayrev07amer (find matches)
Title: The street railway review
Year: 1891 (1890s)
Authors: American Street Railway Association Street Railway Accountants' Association of America American Railway, Mechanical, and Electrical Association
Subjects: Street-railroads
Publisher: Chicago : Street Railway Review Pub. Co
Contributing Library: Carnegie Library of Pittsburgh
Digitizing Sponsor: Lyrasis Members and Sloan Foundation

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
ystem of supply to sight feeders distributed atnecessary points over the engine. By means of a pumpdriven continuously from the valve motion the oil is deliveredback to the supply tank after use, making the system auto-matic. A direct pressure may be established on the oil the introduction of a gas capable of combining with them.The new- process insures a perfection of vacuum not obtain-able in lamps exhausted in groups. For street car purposes it is essential that the lamps havemechanical strength, uniformity in current consumptionand long life without a decrease in brdliancy. A long lifelamp can be secured which gives a dim light but these arenot economical as there is little return for the current con-sumption. The Edison lamp has an efficiency of 4 wattsper candle power. The lamps being in series it is importantthat they be uniform, so the railway lamps are made inthree different classes-for 500, 550 and 600-volt circuits.The filament of cellulose with a hard graphite carbon coat-
Text Appearing After Image:
THE BALL ENGINE. supply pipes to remove any obstructions in them. The oilafter leaving the bearings runs down to the bottom of theframe and from there to a receiving tank near the floorlevel, where screens remove some of the foreign matter;the oil is pumped up to the supply tank in greater quantitiesthan necessary for the engine and the overflow runs back tothe lower tank. Such a gravit) system supplies the oilfree from bubbles which are so great a cause of annoyancewith direct svstems. INCANDESCENT LAMPS FOR STREETCARS. At the lamp works of the General Electric Company theoutput of incandescent lamps is 6,500,000 yearly. For twoyears or more experiments have been in progress to perfecta new exhaustion process, which would do away with themercury pumps. This has been accomplished by means ofa small mechanical pump which exhausts one lamp at atime. The natural residual gases, which are always a sourceof much trouble, are thoroughly removed from the lamps by ing is so shaped and anchore

Note About Images